Hi Matkid76,
I agree that some posts are shallow and irritating. However, the range of different types of posts and posters gives many of us some insight into others thinking. We can choose to accept them or disregard them at our own discretion.
Nobody wants to read a BB with posts only from one of the 3 buckets.
Variety, lightness and tolerance make the the best BBs a genuine pleasure to read.
All the best